Caple C871i Manual de usuario descargar pdf (Pagina 570)

100

101

Apple II Computer Info

With a faster cache and 14MHz CPU, you may be able to go above 10MHz

by plugging in a 48MHz oscillator (for 12MHz Zip), or 64MHz oscillator

(for 14MHz).

Note: Even if you need a new cache and CPU in addition to a new

oscillator, you can still upgrade a 7/32 to a 10/64 and beyond

for around $40. If you are satisfied with 10MHz and are lucky

and don't need the new cache and CPU, then you'd get a 10/32

upgrade for the price of a $1.39 oscillator!

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Good luck.

(Note: The speed of these SRAMs will be sufficient to around 10MHz.

The advantage of these particular chips are that they are

available cheap and in the wide 600 mil package that the Zip

sockets require.

For 15MHz operation, even faster SRAMs may be required.

Unfortunately, they are mostly available only in the skinny

300 mil packages. To use them, half sockets must be soldered

into the Zip. They are also more expensive.

Also consider that the performance advantage going from 10MHz

to 15MHz is far less dramatic than from 7MHz to 10MHz. Factor

in the risk of seriously damaging the Zip during soldering.

Conclusion: the 10MHz operation is safer, requires no permanent

modification of the Zip, and the chips of the right

size are available and costs a lot less.)

Please distribute this document freely. Apple II Forever.

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The Palmtree BBS 310-453-8726 v.32

Inet: [email protected]

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Apple II Computer Technical Information : Apple II Family Hardware Info

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Caple C871i Manual de usuario Pagina 570

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